Corn ochrarin absorbing material and preparation and application methods thereof

An adsorption material, ochratoxin technology, applied in the field of environmental science and engineering, can solve the problems of long penetration time, expensive equipment, complicated operation, etc., achieve the effect of wide linear range, easy operation, and avoid secondary pollution

Inactive Publication Date: 2019-02-19
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of long penetration time, expensive equipment, complicated operation and low penetration rate in the existing ochratoxin penetration method, the purpose of the present invention is to provide a kind of ochratoxin adsorption material in corn, a preparation method and its application , the material can capture ochratoxin

Method used

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  • Corn ochrarin absorbing material and preparation and application methods thereof
  • Corn ochrarin absorbing material and preparation and application methods thereof
  • Corn ochrarin absorbing material and preparation and application methods thereof

Examples

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preparation example Construction

[0025] The preparation method of the ochratoxin adsorption material in corn of the present invention is fast and convenient, and special ionic liquid, salt and grafted chelating gel are used in the preparation, and the prepared regular hexagonal active adsorption material has high targeting and capture properties. Set efficiency, the method can reach 99.2% penetration rate of ochratoxin in corn, has wide linear range, low detection limit, small relative standard deviation, specifically, tetrabutylammonium chloride: sodium sulfate: poly The mass ratio of acrylamide-tetraethylenepentamine grafted chelate gel was 1:7:2.

[0026] The specific preparation process can be as follows: 21 parts of ionic liquid [TBA]Cl with a mass fraction of 17% and 63 parts of Na with a mass fraction of 36% 2 SO 4 Mix evenly to obtain a two-phase infiltration system, then add 16 parts of TEPA-PAM-Gel with a mass fraction of 40% TEPA-PAM-Gel to obtain a gel-like mixture, and burn the above-mentioned g...

Embodiment 1

[0032] 21 parts of ionic liquid [TBA]Cl with a mass fraction of 17% and 63 parts of Na with a mass fraction of 36% 2 SO 4 Mix evenly to obtain a two-phase infiltration system, then add 16 parts of TEPA-PAM-Gel with a mass fraction of 40% to obtain a gel-like mixture, burn the above-mentioned gel-like mixture at 150°C for two hours to obtain powdery particles, and then Store it in a vacuum oven at 40° C. and let it stand for 48 hours to prepare the adsorption material.

[0033] Corn: water: adsorption material = 4:8:1 mass ratio, stand at 26°C for 20 minutes, capture ochratoxin in the corn, then take out the corn and wash it with clean water. The permeability of the target before and after capture is recorded in Table 1.

Embodiment 2

[0035] The preparation method of this example is the same as that of Example 1, the difference is only that the type of ionic liquid in the preparation process is different, in this example, the ionic liquid is changed to [CF3SO3] (trifluoromethanesulfonic acid), and the rest of the conditions are unchanged, record The permeability of the target before and after capture is shown in Table 1.

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Abstract

The invention discloses a corn ochrarin absorbing material and preparation and application methods thereof. The preparation method of the corn ochrarin absorbing material comprises mixing and firing tetrabutyl ammonium chloride, sodium sulfate and polyacrylamide-tetraethylenepentamine grafted chelating gel, during which the firing temperature is 120-150 DEG C, and the weight ratio of tetrabutyl ammonium chloride, sodium sulfate and polyacrylamide-tetraethylenepentamine grafted chelating gel is 1:7:2. The preparation method of the corn ochrarin absorbing material is rapid and convenient and applies special ion solution, salt and the grafted chelating gel, so that the prepared corn ochrarin absorbing material can achieve high targeting property and capturing efficiency. The corn ochrarin absorbing material achieves a corn ochrarin permeating rate up to 99.2% and is wide in linear range and low in detection limit and relative standard deviation, and can meets the national requirements oncorn ochrarin.

Description

technical field [0001] The invention belongs to the field of environmental science and engineering, and specifically relates to an ochratoxin adsorption material in corn, a preparation method and an application thereof. Background technique [0002] The toxin-producing strains of ochratoxin include ochratoxin and sulfur aspergillus. Pollution of ochratoxin The toxin-producing strains of ochratoxin include ochratoxin and sulfur aspergillus. Ochratoxin has a wide range of pollution, and it can contaminate almost all grains such as corn and wheat, and it can be seen from the sample test that there is pollution both at home and abroad. The acute toxicity of ochratoxin is strong, the oral LD50 of ducklings is only 0.5mg / kg body weight, which is equivalent to aflatoxin; the oral LD50 of rats is 20mg / kg body weight. The cause of death from ochratoxin was necrotic lesions of the liver and kidney. Ochratoxin can be isolated from grains that cause a high incidence of liver cancer, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28G01N33/02B01J20/30
CPCB01J20/045B01J20/223B01J20/261B01J20/28016G01N33/02
Inventor 李宇亮欧阳欣雨徐帅宗宇寒马天培朱棋
Owner CHANGAN UNIV
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